Best O365 Apps

244+ iOS apps curated and reviewed

4.4 avg rating
20 free apps
Updated August 2026

Finding the right o365 apps can be overwhelming with so many options. We've analyzed 244+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.

Compare top O365 Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Microsoft OutlookMicrosoft OutlookFree4.8★ (9.1M)YesYesAug 2026
2Microsoft OneDriveMicrosoft OneDriveFree4.7★ (487K)NoYesAug 2026
3Microsoft 365 CopilotMicrosoft 365 CopilotFree4.7★ (1.3M)YesYesAug 2026
4Microsoft 365 AdminMicrosoft 365 AdminFree4.6★ (5.8K)NoNoAug 2026
5XLSX Sheets: Edit SpreadsheetXLSX Sheets: Edit SpreadsheetFree4.5★ (2.9K)NoYesAug 2026
6Microsoft WordMicrosoft WordFree4.7★ (2.9M)NoYesAug 2026
7Microsoft ExcelMicrosoft ExcelFree4.8★ (1.4M)NoYesAug 2026
8Microsoft TeamsMicrosoft TeamsFree4.8★ (3.4M)NoYesAug 2026

Top Picks for O365

Microsoft Outlook#1

Microsoft Outlook by Microsoft Corporation

Secure Email, Calendar & Files
Editor's Choice
📊 Productivity
4.8😐(9.1M ratings)
FreeAdsIn-App Purchases
#8in Productivity
Microsoft Outlook screenshot 1
Microsoft Outlook screenshot 2
Microsoft Outlook screenshot 3
Microsoft Outlook screenshot 4
Microsoft Outlook screenshot 5
Microsoft Outlook screenshot 6

Consolidate all your email accounts and calendars into one streamlined application. Manage your inbox, schedule meetings, and access files from various cloud services. Enhance productivity with AI-powered writing assistance and smart inbox features.

What We Love

  • 🚀 Great for corporate email
  • 👍 Customizable and user-friendly
  • 🚀 Seamless integration with Microsoft 365
  • 👍 Solid email and calendar functionality

Room to Improve

  • 🐛 Buggy and unstable at times
  • 🔋 High battery consumption
  • 🔒 Security issues with password resets
Microsoft OneDrive#2

Microsoft OneDrive by Microsoft Corporation

File & photo cloud storage
Strong Contender
📊 Productivity
4.7😐(487K ratings)
FreeIn-App Purchases
#17in Productivity
Microsoft OneDrive screenshot 1
Microsoft OneDrive screenshot 2
Microsoft OneDrive screenshot 3
Microsoft OneDrive screenshot 4
Microsoft OneDrive screenshot 5
Microsoft OneDrive screenshot 6

Securely store, back up, and sync your photos, videos, and files across all your devices. Share content with others, scan documents, and access files offline. Offers free storage with options to upgrade for more space and premium features.

What We Love

  • 🚀 Seamless syncing across devices
  • 💡 Useful for storing and accessing files
  • 🔒 Secure cloud storage
  • 👍 Great integration with Microsoft Office

Room to Improve

  • 🐛 Unreliable app performance
  • 🐛 Issues with photo/video uploads
  • 🐛 Buggy PDF annotation tools
Microsoft 365 Copilot#3

Microsoft 365 Copilot by Microsoft Corporation

AI-powered productivity
Worth Considering
📊 Productivity
4.7😐(1.3M ratings)
FreeAdsIn-App Purchases
#24in Productivity
Microsoft 365 Copilot screenshot 1
Microsoft 365 Copilot screenshot 2
Microsoft 365 Copilot screenshot 3
Microsoft 365 Copilot screenshot 4
Microsoft 365 Copilot screenshot 5

This AI-powered app helps you be more productive at work. Chat with an AI assistant to create content, manage projects, find files, and learn new concepts. It offers voice interaction and expert insights for various tasks.

What We Love

  • 🚀 Seamless integration of Office apps
  • 🔒 Secure cloud storage with OneDrive
  • 👍 Convenient all-in-one productivity solution
  • 🚀 Great for on-the-go work and collaboration

Room to Improve

  • 🐛 Inconsistent file saving and syncing
  • 🔍 Confusing file management and navigation
  • 🔍 Limited functionality compared to desktop Office

More O365 apps to explore

4
Microsoft 365 Admin
Microsoft 365 Admin
Microsoft 365 Admin
by Microsoft Corporation
Free

Manage your Microsoft 365 or Office 365 business subscription from your mobile device. Add users, reset passwords, manage devices, and monitor service health. Stay informed with critical notifications and support requests on the go.

Manage users and groupsReset passwordsManage devices
📊 Productivity
(5.8K)
free
5
XLSX Sheets: Edit Spreadsheet
XLSX Sheets: Edit Spreadsheet
XLSX Sheets: Edit Spreadsheet
Create, Share XLS Office Files
Free

Create, edit, and manage Excel-compatible spreadsheets on your mobile device. Offers powerful editing tools, formula assistance, data visualization, and collaboration features. Work offline and import/export data in various formats.

Edit, create, and manage XLS sheetsExcel-compatible formula builderData visualization tools
📊 Productivity
(2.9K)
free with in-app purchases
6
Microsoft Word
Microsoft Word
Microsoft Word
Create a Resume, Essay or PDF
Free

Create, edit, and share documents on your mobile device. This powerful word processor offers templates, formatting tools, and collaborative features to help you write impactful text documents, resumes, and more. Your office moves with you, allowing for seamless editing and sharing from anywhere.

Create and edit documentsModern templatesRich formatting and layout options
📊 Productivity
(2.9M)
free with in-app purchases
7
Microsoft Excel
Microsoft Excel
Microsoft Excel
Organize Your Data and Budget
Free

This powerful productivity app allows you to create, view, and edit spreadsheets on the go. Manage data, perform calculations, and analyze information with robust formatting and charting tools. Share your work easily with others.

Create, view, and edit spreadsheetsData analysis with charts and graphsBudgeting and accounting tools
📊 Productivity
(1.4M)
free with in-app purchases
8
Microsoft Teams
Microsoft Teams
Microsoft Teams
Call. Chat. Collaborate
Free

This app brings people together for community activities or work projects. It offers integrated chat, events, meetings, storage, and task management. Connect, collaborate, and get things done securely in one place.

Community and team organization1-on-1 and group chatSecure audio and video calls
💼 Business
(3.4M)
free
9
Teams
Teams
Teams
by CCCC Highway Consultants Co., Ltd.
Free

Easily manage and create tasks to improve team communication and productivity. This app facilitates efficient office collaboration.

Task managementTeam communicationProductivity enhancement
🔧 Utilities
(1)
ad-supported
10
Microsoft OneNote
Microsoft OneNote
Microsoft OneNote
Capture Notes, Ideas and Memos
Free

Capture thoughts, ideas, and plans in a digital notepad. Organize, search, and secure your notes, memos, and sketches. Sync across devices for access anywhere, anytime. Collaborate with others on shared notepads.

Capture thoughts and ideasDigital sketchbookOrganize and search notes
📊 Productivity
(1.1M)
free with in-app purchases
11
Microsoft To Do
Microsoft To Do
Microsoft To Do
Capture Tasks & Set Reminders
Free

Manage your daily tasks and create various lists to stay organized. This app offers personalized daily planning tools and intelligent suggestions to help you focus on what matters. Collaborate with others on shared lists and access your tasks across all your devices.

Personalized daily plannerIntelligent task suggestionsCross-device syncing
📊 Productivity
(265K)
free
12
Microsoft Edge
Microsoft Edge
Microsoft Edge
Start here, get it done here
Free

This AI-powered browser integrates a personal assistant to enhance productivity. It helps summarize content, answer questions, and create images using advanced AI models. Customize your browsing with extensions and enjoy enhanced privacy and security features.

AI-powered browsing with CopilotSummarize articles, videos, and PDFsGenerate images with AI
🔧 Utilities
(558K)
free with in-app purchases
13
Office 7: Word, Sheets, PDF
Office 7: Word, Sheets, PDF
Office 7: Word, Sheets, PDF
Documents, Spreadsheet, Slides
Free

Create, edit, and share documents, spreadsheets, presentations, and PDF files. This app offers extensive formatting options, compatibility with major file formats, and tools for managing and annotating PDFs. It's a versatile solution for all your office needs.

Create and edit documents, spreadsheets, and presentationsFull Microsoft Office format compatibilityAdvanced text and paragraph formatting
💼 Business
(470)
free with in-app purchases
14
CiraSync Public Folders O365
CiraSync Public Folders O365
CiraSync Public Folders O365
View PF Contacts & Calendars
Free

Access and synchronize Office 365 Public Folder contacts and calendars. Create, edit, and delete contacts and appointments. View Public Folder emails. Sync contacts and calendars directly to your Office 365 mailbox.

Sync Public Folder contacts and calendarsCreate, edit, and delete contacts/appointmentsView Public Folder emails
📊 Productivity
(10)
freemium
15
Microsoft Power BI
Microsoft Power BI
Microsoft Power BI
Business data analytics
Free

Access and analyze your business data from anywhere with powerful mobile tools. Visualize key metrics, filter information, and share insights on the go. Get real-time notifications and ask questions of your data with a virtual analyst.

View data in one placeExplore, filter, and focus dataAnnotate and share reports
💼 Business
(95K)
free
16
Microsoft PowerPoint
Microsoft PowerPoint
Microsoft PowerPoint
Design Slideshow Presentations
Free

Create, edit, and present slideshows from anywhere. Access recent files, sync across devices via OneDrive, and collaborate with others in real time. Features AI-powered design ideas and a Presenter Coach for public speaking practice.

Create and edit presentationsView and present slideshowsSync across devices with OneDrive
📊 Productivity
(568K)
free with in-app purchases
17
Dynamics 365 for phones
Dynamics 365 for phones
Dynamics 365 for phones
by Microsoft Corporation
Free

This business solution helps professionals engage with customers and stay productive on the go. Update notes, tasks, and records offline or online, arriving prepared for every appointment. It offers tools for managing data and updating status for sales, agents, and supervisors.

Offline access with synchronizationPersonalized action hub (Workspace)Enhanced note-taking with device access
💼 Business
(5.7K)
free
18
AO 365
AO 365
AO 365
by Academy of Osseointegration
Free
💼 Business
(0)
19
365 Academy of Baseball
365 Academy of Baseball
365 Academy of Baseball
by 365 Academy of Baseball LLC
Free

Access schedules and book training sessions for baseball development. This app connects users directly to the academy's services.

View schedulesBook sessionsDirect academy access
💪 Health & Fitness
(1)
free
20
TASBO365
TASBO365
TASBO365
by Texas Association of School Business Officials
Free

This app provides school finance and operations professionals with tools and services to improve public school effectiveness. Access event resources, connect with speakers and exhibitors, and manage your schedule on the go.

Profile managementEvent resource accessSpeaker information
📚 Education
(3)
free

FAQ about O365

What are the best o365 apps for iPhone?
Microsoft Outlook tops our o365 apps ranking as of August 2026, with a 4.8-star average from 9.1M App Store ratings, and it's free to download.
Yes — 20 of the top o365 apps we rank are free to download, including Microsoft Outlook and Microsoft OneDrive.
Microsoft Outlook shows ads and offers in-app purchases, according to its App Store listing as of August 2026.
We track 244+ o365 apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
This application consolidates all your email accounts and calendars into a single, convenient location. It helps you manage your inbox, schedule meetings, and access files from various cloud storage services. The app also offers AI-powered features to enhance productivity, such as summarizing long email threads and assisting with writing.
Key features include a smart inbox that sorts messages, quick swipe actions for managing emails, easy sharing of meeting availability, and the ability to find contacts and trips. You can also view and attach files from services like OneDrive and Dropbox without downloading them, and edit Office documents directly within the app.

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